Attendance in four textile mills in Philadelphia

Veröffentlicht in American Academy of Political and Social Science The annals of the American Academy of Political and Social Science (1922)

A study in labor mobility

Veröffentlicht in American Academy of Political and Social Science The annals of the American Academy of Political and Social Science (1922)

<<The>> conditions of industrial progress : addresses by Sir Henry Clay ...

Veröffentlicht 1947

Research studies / Industrial Research Department, Wharton School of Finance and Commerce, University of Pennsylvania, Philadelphia

Veröffentlicht 1928-1956

Research studies / Industrial Research Department, Wharton School of Finance and Commerce, University of Pennsylvania, Philadelphia

Veröffentlicht 1928-1956

Research studies / Industrial Research Department, Wharton School of Finance and Commerce, University of Pennsylvania, Philadelphia

Veröffentlicht 1928-1956